1990305

Information

• Patent Grant
• 1990305

• References
• Source

• Patent Number

  1,990,305

• Date Filed

  Not available

• Date Issued

  Tuesday, February 5, 1935
  89 years ago

• CPC

  • F16N7/366 - with feed by pumping action of a vertical shaft of the machine
  • F16N2210/16 - Pumps
  • F16N2250/16 - Number of revolutions, RPM
  • F16N2270/26 - variable

• US Classifications

  • 384 - Bearings
  • 184 - Lubrication